This project predates Clay by several years. Clay's earliest commit was 2024. Taffy was forked from https://github.com/vislyhq/stretch in 2022, and Stretch's first commit was 2019.

The real inspiration is https://github.com/react/yoga (as used by React Native). Stretch was originally a Rust port/rewrite of Yoga.

An associated project: https://github.com/DioxusLabs/anyrender does take a lot of inspiration from Clay's "drawing commands"